не пойму,где я ошибся
package com.javarush.task.task18.task1818;
/*
Два в одном
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
OutputStream outputStream = new FileOutputStream(new BufferedReader(new InputStreamReader(System.in)).readLine());
InputStream inputStream1 = new FileInputStream(new BufferedReader(new InputStreamReader(System.in)).readLine());
InputStream inputStream2 = new FileInputStream(new BufferedReader(new InputStreamReader(System.in)).readLine());
byte [] bytes = new byte[inputStream1.available()];
byte [] bytes1 = new byte[inputStream2.available()];
byte [] bytes2 = new byte[inputStream1.available() + inputStream2.available()];
while (inputStream1.available()>0){
int count = inputStream1.read(bytes);
outputStream.write(bytes2,0,count);
}
while (inputStream2.available()>0){
int count = inputStream1.read(bytes1);
outputStream.write(bytes2,(bytes2.length/2)+1,count);
}
inputStream1.close();
inputStream2.close();
outputStream.close();
}
}